Sanitation Container Casters Wheel Options: Polyolefin Phenolic Rubber Tread on Iron Semi Steel without Bearing  Wheel Type / Size Capacity 5" 6" Polyolefin 650 lbs 650 lbs Phenolic 1000 lbs...

Medium/Heavy Duty Casters Wheel Options: (4", 5", 6", 8") Rubber Tread on Iron (Black on Black Iron) Polyurethane (Red on Silver Semi-Steel) Semi Steel with Bearing (Silver) Polyolefin (Black) Phenolic...

Heavy Duty Casters Wheel Options: Semi Steel Ductile Iron V-Groove Iron Poly on Iron  Wheel Type / Size Capacity 5" (2.5" wide) 6" (2.5" wide) 8" (2.5" wide) Semi-Steel 1500...

Medium Duty Casters Wheel Options: (4", 5", 6", 8") Rubber Tread on Iron (Black on Black Iron) Polyurethane (Red on Silver Semi-Steel) Semi Steel with Bearing (Silver) Polyolefin (Black) Phenolic...

General Duty Casters Wheel Options: Hard Rubber Semi Steel with Bearing Semi Steel without Bearing Polyolefin Rubber on Tread  Wheel Type / Size Capacity 3" 4" Hard Rubber 250 lbs...